The Baffin Selkirk is rated for adventurous pursuits in extreme cold temperatures. Polar ProvenA(R) in some of the world&';s harshest climates, SELKIRK is not only technically superior, but also lightweight and flexible. Recommended during moderate levels activity, SELKIRK offers everything you need in a performance winter footwear companion. Insulation level: Removable Comfort-Fit multi-layer inner boot system Waterproof level: B-Tek dry waterproof base Snowshoe compatible Slip resistant Technology Upper: Double-strap Velcro for easy fastening and added security Seam-sealed for maximum water protection Nylon locking snow collar with built-in extendable gaiter to protect from the elements Pull loop at the back for ease of entry Base: Arctic(TM) Rubber shell to provide lightweight flexibility, cold-resistance and resil